基于路况识别的高速动车组构架损伤规律

doi:10.3901/JME.2018.08.041

机械工程学报 ›› 2018, Vol. 54 ›› Issue (8): 41-47.doi: 10.3901/JME.2018.08.041

• 特邀专栏：大国重器：复兴之路上的轨道交通技术 • 上一篇下一篇

基于路况识别的高速动车组构架损伤规律

张一喆¹, 李强¹, 薛海^1,2, 胡伟钢¹, 周平宇³, 邹晓龙³

1. 北京交通大学载运工具先进制造与测控技术教育部重点实验室北京 100044;
2. 兰州交通大学机电工程学院兰州 730070;
3. 中车青岛四方机车车辆股份有限公司青岛 266111

收稿日期:2017-03-31 修回日期:2017-12-20 出版日期:2018-04-20 发布日期:2018-04-20
通讯作者: 张一喆(通信作者),男,1987年出生,博士研究生。研究方向为动车组结构可靠性。E-mail:11116341@bjtu.edu.cn
基金资助:
国家重点研发计划课题资助项目（2016YFB1200403）。

Damage Law of High-speed EMU Frame Based on Working Condition Recognition

ZHANG Yizhe¹, LI Qiang¹, XUE Hai^1,2, HU Weigang¹, ZHOU Pingyu³, ZOU Xiaolong³

1. Key Laboratory of Vehicle Advanced Manufacturing, Measuring and Control Technology of Ministry of Education, Beijing Jiaotong University, Beijing 100044;
2. School of Mechanical Engineering, Lanzhou Jiaotong University, Lanzhou 730070;
3. CRRC Qingdao, Sifang Co., Ltd., Qingdao 266111

Received:2017-03-31 Revised:2017-12-20 Online:2018-04-20 Published:2018-04-20

摘要/Abstract

摘要： 目前我国自主研发的复兴号动车组，在京沪高铁最高运营速度已达到了350 km/h，随着速度的不断提高，对动车组构架的疲劳问题研究显得愈发重要。在对构架关键点进行动应力测试的过程中可以看到，动车组通过曲线、道岔等特定线路工况，相较直线线路，测点应力水平均有不同程度的变化。在对某型动车组构架关键点进行数月的线路实测基础上，依据MEMS陀螺仪、GPS以及部分线路参数，提取到上述不同工况下测点充分的应力数据，进行统计分析和计算。研究发现大部分测点在通过曲线时应力水平有一定上升，而在通过道岔时的应力水平有大幅度提高；对比不同位置的测点，构架外部横侧梁连接处等位置相对于中心附近，对特殊工况的响应更加敏感。上述结论对分工况载荷谱的研究提供试验基础，同时也为结合构架损伤规律的线路设计给出参考建议。

关键词: 等效应力, 动车组, 构架, 敏感度, 线路工况

Abstract: At present, the maximum operating speed of China's independent development renaissance EMU has reached 350 km/h in Beijing-Shanghai high-speed rail, with the speed increase, EMU frame fatigue research is increasingly important. Through the dynamic stress test of the bogie frame of the EMU, it is found that stress level of the key points under curve condition and turnout condition, compared with the straight-line condition, have their own characteristics. Based on MEMS gyroscope, GPS and rail line parameters, after several months of testing a certain type of EMU frame, the stress data of the measuring points under different working conditions are extracted, statistically analyzed and calculated. The results show that most of the measuring points have a certain increase in stress level when passing through the curve, and the stress level is greatly increased at the time of passing through a turnout. While comparing the stress data at different locations, it can be found that the response to specific conditions, such as curve condition and turnout condition, measuring points at the joint between cross-beam and side-beam of the frame are more sensitive than the measuring points near the center of the frame. The above conclusions provide experimental basis for the research on load spectrum of different working condition and also give some suggestions for the line design of combined with frame damage.

Key words: EMU, equivalent stress, frame, sensitivity, working conditions

中图分类号:

U270

张一喆, 李强, 薛海, 胡伟钢, 周平宇, 邹晓龙. 基于路况识别的高速动车组构架损伤规律[J]. 机械工程学报, 2018, 54(8): 41-47.

ZHANG Yizhe, LI Qiang, XUE Hai, HU Weigang, ZHOU Pingyu, ZOU Xiaolong. Damage Law of High-speed EMU Frame Based on Working Condition Recognition[J]. Journal of Mechanical Engineering, 2018, 54(8): 41-47.

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基于路况识别的高速动车组构架损伤规律

Damage Law of High-speed EMU Frame Based on Working Condition Recognition

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